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Full-Text Articles in Engineering
Investigating The Performance Of Bendable Concrete Against Traditional Concrete, Landon J. Poston
Investigating The Performance Of Bendable Concrete Against Traditional Concrete, Landon J. Poston
Construction Management
The qualitative research in this case study evaluates the importance of bendable concrete within various construction settings. The data aims to justify the interest in bendable concrete, as well as why it is not being used more in structural work. The intended stakeholders of this paper are concrete suppliers, contractors, and researchers who are looking for more imperative ways to manufacture a more sustainable form of concrete. Through a brief online meeting and a Google Form questionnaire, company participants were able to provide the knowledge and feedback desired for how bendable concrete can be incorporated more in the future of …
Iron Filings Impact On The Compressive Strength Of Concrete, Dominic Daniel Aceves
Iron Filings Impact On The Compressive Strength Of Concrete, Dominic Daniel Aceves
Construction Management
In this study, compression tests were performed on three different mix designs of concrete to evaluate the effects of iron filings as an admixture to concrete. The first mix design served as the control mix, being the variable that the other two mixes will be based off. The second mix design was the same as the first mix design, but with an added 12 ounces of iron filings. The third mix design was, again, the same as the first mix design, but with an added 24 ounces of iron filings doubling that of the second mix design. The objective of …
Son Care Foundation – Lean To Shade Structure Design And Construction, Ryan Joseph Mccann
Son Care Foundation – Lean To Shade Structure Design And Construction, Ryan Joseph Mccann
Construction Management
This paper discusses the design and construction of a lean-to-shade structure built for the Son Care Foundation in San Luis Obispo. The Son Care Foundation is a nonprofit organization that raises guide dogs for veterans and first responders with PTSD. This shade structure is 16 feet long and 6 feet wide, its height slopes from 9 feet in the front down to 8 feet in the back creating a roof pitch of 2:12. The sheet metal roof also has an overhang of approximately 1 foot. As requested by the client, the shade structure was designed to fit the aesthetic of …
Effect Of Pismo Clams As Partial Fine And Coarse Aggregate Replacement On Workability And Compressive Strength Of Concrete, Alan Munoz Pille
Effect Of Pismo Clams As Partial Fine And Coarse Aggregate Replacement On Workability And Compressive Strength Of Concrete, Alan Munoz Pille
Construction Management
Concrete has been utilized for ages. Unfortunately, over the hundreds of years there has been little development in the applications of new aggregate materials. The world is moving towards a sustainable way of living and as a result seashells have come into the mix. Pismo Clams are a native species to San Luis Obispo County. This marine species has the possibility of becoming a partial aggregate replacement for fine and coarse aggregates in concrete. The results of prior studies indicate a possible application of seashell use in concrete. This paper evaluates the workability and compressive strength of concrete containing fine …
Building 21 Courtyard Barbecue Pit Demolition, Will Riviere
Building 21 Courtyard Barbecue Pit Demolition, Will Riviere
Construction Management
This project intended to demonstrate the process of a full-scope demolition project at a manageable scale. Almost sixteen yards of concrete were to be demolished, including all reinforcing structures within the barbecue. The purpose of this project was to clear space for the impending renovation of Building 21’s courtyard and remove the unsafe barbecue from the busy pedestrian pathway. Sledgehammers were used in conjunction with electric jackhammers to perform the demolition. Rebar from demolition was separated from the concrete and recycled separately from any cementitious materials. Careful attention was given to protecting existing brick beneath the structure, the surrounding area, …
Reducing Carbon Emissions With Returned Concrete, John M. Maxwell Jr.
Reducing Carbon Emissions With Returned Concrete, John M. Maxwell Jr.
Construction Management
The concrete industry is one of the most energy-intensive sectors of construction. Specifically, the cement production aspect is the most energy intensive, and produces the most carbon emissions. Concrete, a material ubiquitous with nearly every facet of construction; certain types of structures are composed of nearly all concrete. Production of cement is one of the biggest contributors to emissions within the industry. There have been initiatives to reduce or offset emissions from this process, through things like carbon capture, and the purchase of carbon or emissions credits. The objective of this paper was to investigate a new method of carbon …
Cal Poly Craft Center Wedging Tables, Cooper Christopher Strong
Cal Poly Craft Center Wedging Tables, Cooper Christopher Strong
Construction Management
The Craft Center, located on Cal Poly's campus, is where students can unwind from stressful coursework and engage in activities like pottery, surfboard shaping, and stained glass. The pottery studio needed new wedging tables, which are essential for removing air from clay before shaping it. The project involved building two new 7’ x 2.5’ tables that would fit well in the space and be durable. Designed to be 33” tall, these tables are accessible to students of varying heights. They feature a concrete surface that is both durable and porous, helping to absorb some moisture during use. The previous tables …
Compressive And Flexural Tensile Strength Impacts Of Aluminum Shavings In Concrete, Ian Smith
Compressive And Flexural Tensile Strength Impacts Of Aluminum Shavings In Concrete, Ian Smith
Construction Management
Concrete is one of the most utilized construction materials around the world, but new and cutting-edge methods are constantly pushing the envelope for concrete’s applications and feasibility as a construction material. Unfortunately, concrete has a general lack of resistance to bending and stretching. Studies have shown several successful attempts to enhance the mechanical properties of concrete through implementation of various admixtures and methods. Steel is widely considered the primary material capable of reinforcing concrete. This paper evaluates concrete’s change in strength of flexural tension and compression as a result of implementing aluminum as a reinforcing agent. To determine the full …
Slab Extension At Woods Humane Society, Corey K. Smith
Slab Extension At Woods Humane Society, Corey K. Smith
Construction Management
Woods Humane Society is an animal shelter that provides pet rehabilitation and adoption services to San Luis Obispo and surrounding areas. The Woods’ facility contains a number of kennels for dogs as well as numerous outdoor, fenced-in, concrete exercise yards. These yards give dogs the opportunity to play outside a few times a day allowing them to get vital exercise. One of these yards on the south side of the property had an exterior fence that was offset from an existing slab on the interior of the fence by one foot. This was an issue for the shelter as dogs …
Optimal Concrete Mix Design And Finish For Skateboarding Performance, Lohgan Christoper Spencer
Optimal Concrete Mix Design And Finish For Skateboarding Performance, Lohgan Christoper Spencer
Construction Management
While concrete has been used in construction for hundreds of years, the introduction of concrete to skateboarding is a relatively new development. Concrete and concrete finishes are very well studied in the context of buildings and building design. Shotcrete is also very well understood as it has been in use for over 100 years. Because it is a relatively new sector of the industry, concrete skatepark construction is an area that has plenty of room for research and development. This research paper will describe the finish methods and mix designs used for concrete skatepark construction by leading skatepark construction companies …
City Farm Slo ‘Garden For All’ – Shade Structure, Reed Aitken
City Farm Slo ‘Garden For All’ – Shade Structure, Reed Aitken
Construction Management
Local non-profit, City Farm SLO, recently presented an opportunity for four Cal Poly Construction Management students to complete senior projects to construct their vision of a “Garden for All.” This paper will focus on the design, preconstruction, and construction processes necessary to complete the shade structure. The project will provide much needed shade to an outdoor classroom area where City Farm SLO hosts farm based education programs all year round. The completion of this senior project required thorough design, estimating, coordination, and construction efforts, while keeping safety and sustainable building practices at the forefront of every decision. This was particularly …
Effects Of Admixes On The Compressive Strength Of Permeable Concrete, James T. Lyon
Effects Of Admixes On The Compressive Strength Of Permeable Concrete, James T. Lyon
Construction Management
Compression tests were performed on three samples of permeable concrete to evaluate the effects of admixes on a conventional permeable concrete. The first mix served as the control, representing a standard permeable concrete sample. The second mix replicated the control but added a small amount of fiberglass, accounting for 0.5% of the cement's weight. The third mix again mirrored the control and incorporated the manufacturer's recommended amount of a water reducing admix known as "Reducer 555". The objective of testing the two new mixes against the control mix was to evaluate the potential increase in ultimate compressive strength. Four 6” …
United Methodist Children Center Drain Project, Andy Abdelnour
United Methodist Children Center Drain Project, Andy Abdelnour
Construction Management
The United Methodist Children Center in San Luis Obispo is a preschool for young children in our community. Some of these students are the children of Cal Poly faculty and staff. The previous drain was not draining water properly and was uneven with bumps and dips that became a hazard for the children. Children would trip, fall, and hurt themselves on the drain. A team of two Cal Poly Construction Management students Ethan Lin and Andy Abdelnour worked together to estimate, design, coordinate, demolish, and construct a new section of the drain that would be safe for the students. The …
Shape Deformities In Recycled Concrete As A Substitute Aggregate In Concrete, Carson D. Timmerman
Shape Deformities In Recycled Concrete As A Substitute Aggregate In Concrete, Carson D. Timmerman
Construction Management
Concrete is a universal material that is used widely across the construction industry. Within a standard concrete mix, a fine aggregate and a coarse aggregate are added to the mix design to help with solidity and compressive strength in the mixture. The admixtures, additives, slump, and mix ratios will differ based on the compressive strength you're trying to attain. This paper directly reflects the results of the differences between shapes in recycled concrete used as a coarse aggregate substitute in concrete mixes. As the construction industry grows, so does outreach towards sustainability and reusing materials anywhere the industry can. Testing …
Evaluating Smartrock Temperature Sensor Performance In Measuring Concrete Strength, Jack Dasch
Evaluating Smartrock Temperature Sensor Performance In Measuring Concrete Strength, Jack Dasch
Construction Management
Concrete testing is one of the most important parts of the concrete placement process. Traditionally, this is done through the use of 6x12 cylinders cured in a lab that are broken at various stages of the curing process. These cylinders are not necessarily representative of the in-situ concrete because of their differing curing conditions- indoors versus exposed to the elements. Wireless temperature sensors, like Giatec’s SmartRock, have the potential to determine concrete strength based off the temperature of the placed concrete over time, thus eliminating the need for cylinder breaks. Once calibrated to the specific mix design, these wireless sensors …
Differing Moisture Content In Concrete And Mitigation Methods: Research Of Sacramento, Taylor S. Tonda
Differing Moisture Content In Concrete And Mitigation Methods: Research Of Sacramento, Taylor S. Tonda
Construction Management
The city of Sacramento and its concrete foundations face one of the most challenging conditions in the flooring industry, high RH Moisture. RH Moisture or Relative Humidity Moisture is one of the main causes for flooring systems to fail. The source of High RH Moisture consists of surrounding geographic features like rivers, flood plains, and elevation, as well as improper or nonexistent use of a vapor barrier beneath the concrete foundation. Mapping and other data is used to support these claims. If a flooring system is not properly prepared for high RH Moisture levels, issues such as bubbling, delamination, and …
Construction Of Modular Concrete Footings For Use In Cal Poly’S High Bay Laboratory, Tyler W. Giddens
Construction Of Modular Concrete Footings For Use In Cal Poly’S High Bay Laboratory, Tyler W. Giddens
Construction Management
This project-based senior project had the end goal of creating two concrete modular foundations that can be used in the High Bay Laboratory for testing procedures. The concrete modular blocks are 6’ long by 3’ wide, and 1.5’ tall. The foundations each held 100 embeds. Each embed serves as an anchor point for various attachments for testing purposes. This was an interdisciplinary project amongst two CM students and one ARCE student. The ARCE student was responsible for the design of the blocks, encompassing the formwork and the rebar. The CM students were responsible for estimating, scheduling, and the construction of …
Cvaf: Service Dog Kennel Construction, Luke A. Terrio, Spencer Allen
Cvaf: Service Dog Kennel Construction, Luke A. Terrio, Spencer Allen
Construction Management
The California Veterans Assistance Foundation Service Dog Kennel Construction project gave back to our country’s veterans by constructing new kennels for their service dogs. The previous kennel on the veteran residential site needed an upgrade due to the increased number of service dogs at the shelter. A team of two Cal Poly Construction Management students consisting of Spencer Allen and Luke Terrio worked to design, estimate, coordinate, and construct a new kennel structure for the site. The roles were divided in the project between the preconstruction and construction phases. During pre-construction Spencer’s role was to schedule the job and create …
Sustainable Concrete And Its Current Stance In The Construction Industry, Morgan Hailey Gawle
Sustainable Concrete And Its Current Stance In The Construction Industry, Morgan Hailey Gawle
Construction Management
Concrete is currently the second most consumed resource used in the world and the production of this material, mainly the production of cement, contributes to a little over 8% of carbon dioxide emissions globally. The concept of sustainable concrete is rapidly surfacing within the construction industry as environmental issues and concerns like global warming and climate change continue to worsen. Scientists have been and continue to consistently conduct studies to test if sustainable concrete is a possible solution to reducing carbon dioxide and greenhouse gas emissions that come straight from the construction industry. But some construction companies have concerns that …
Cvaf: Service Dog Kennel Construction, Spencer G. Allen
Cvaf: Service Dog Kennel Construction, Spencer G. Allen
Construction Management
The California Veterans Assistance Foundation Service Dog Kennel Construction gave back to our country’s veterans by constructing new kennels for their service dogs. The previous kennel on the veteran residential site needed an upgrade due to the increased number of service dogs at the shelter. A team of two Cal Poly Construction Management students consisting of Spencer Allen and Luke Terrio worked to design, estimate, coordinate, and construct a new kennel structure for the site. The roles were divided on the project between the preconstruction and construction phases. During preconstruction Spencer’s role was to schedule the job and create the …
Caed Support Shop Concrete Slab, Nathan Horst, Steven Zheng
Caed Support Shop Concrete Slab, Nathan Horst, Steven Zheng
Construction Management
This senior project paper will explore the history, background, process, and challenges encountered while constructing a dream project for the Cal Poly CAED Support Shop during the Summer of 2021. From the initial site survey, through the design and permitting process and the physical construction, this project truly encapsulated the “learn-by-doing” philosophy. The project was successful in constructing a final product that enables ADA wheelchair access, creates more useable project work area, as well as addresses drainage issues and provides underground electrical conduits for future electrical upgrades.
San Luis Obispo Botanical Garden Amphitheater Benches - The Design, Devon Barthmaier
San Luis Obispo Botanical Garden Amphitheater Benches - The Design, Devon Barthmaier
Construction Management
This paper will outline the process of designing, building, and installing ten concrete benches at the San Luis Obispo Botanical Gardens with an emphasis on the design phase. The San Luis Obispo Botanical Gardens is home to an amphitheater that is used for event spaces. The goal of the project was to create a design to seat approximately forty people facing the stage. The project group consisted of six students broken into two teams, a pre-construction team and a construction team. The preconstruction team focused on designing the benches and procuring the materials while the construction team focused on the …
San Luis Obispo Botanical Garden Concrete Benches, Anthony N. Masarweh
San Luis Obispo Botanical Garden Concrete Benches, Anthony N. Masarweh
Construction Management
The purpose of this project is to build a total of 10, 8-foot-long concrete benches. These benches will be stationed at the San Luis Obispo Botanical Garden located at 3450 Dairy Creek Road, San Luis Obispo. The design consists of a large block style bench with composite Trex boards layered on top for comfort upon sitting. The structure consists of a rebar cage made of #3, 12”x18” stirrups at 16” O.C. There is a foam core in the middle of the rebar cage to allow for lighter weight benches and also to minimize the cubic yards of concrete used per …
San Luis Obispo Botanical Garden Benches, Brandon Keefer
San Luis Obispo Botanical Garden Benches, Brandon Keefer
Construction Management
The San Luis Obispo Botanical Garden is an outdoor area where people often gather for events such as weddings or just simply for a casual stroll through nice scenery. There were 6 students, including myself, who teamed up to complete this project where we divided into two sub-teams, one design team and one construction team. Since I was assigned to be the team captain but was placed on the construction team, I will touch a little bit on the design process since I was involved with overseeing this aspect but focus mainly on the actual construction of the benches. This …
Paso Robles Police Department Outdoor Training Facility Improvements, Nicolas A. Petri
Paso Robles Police Department Outdoor Training Facility Improvements, Nicolas A. Petri
Construction Management
This paper will outline the pre-construction and construction processes of the Paso Robles Police Department’s outdoor training facility improvements. The project, located in East Paso Robles, focuses on 12,000 square feet of a 24,300 square foot site owned by the city of Paso Robles. This is a group project done with Gavin Abraham and Zach Stellini that remodeled an existing outdoor training facility, including over 1400 square feet of concrete flatwork, underground utilities, 80 cubic yards of decomposed granite and various site civil improvements. The purpose of this project was to provide the Paso Robles Police Department with a cleaner …
Pouring Concrete Benches For The Amphitheater At Slo Botanical Garden, Makenna Paige Gitchell
Pouring Concrete Benches For The Amphitheater At Slo Botanical Garden, Makenna Paige Gitchell
Construction Management
This paper will outline the logistics and construction processes for the construction of ten concrete benches for a new amphitheater area at the San Luis Obispo Botanical Garden. These benches will provide stadium-style seating for around forty guests that the botanical garden staff can utilize for special events, tours and outdoor classes. The overall project team was composed of 6 students broken out into a preconstruction (Anthony Masarweh, Sydnee Greer and Devon Barthmaier) and a construction team (Makenna Gitchell, Brandon Keefer, and Kyler Cruz). As part of the construction team, we were responsible for coordinating material deliveries, building the formwork, …
Testing Concrete Reinforcing Fibers To Reduce Surface Cracking, Shaina Marie Suanico
Testing Concrete Reinforcing Fibers To Reduce Surface Cracking, Shaina Marie Suanico
Construction Management
Concrete reinforcing fibers are a fairly new technology being used in the construction industry to replace reinforcing bar in various applications. In partnership with Largo Concrete, Master Builders Solutions, and Cal Portland, this action research-based project aimed to test how the MasterFiber 360FF synthetic reinforcing fibers impact plastic shrinkage cracking with various types of aggregate using the ASTM C1579-06 test. The end goal of this project is to provide a baseline for future construction management students to test plastic shrinkage using the C1579-06 apparatus that was built to produce further knowledge on the feasibility of concrete reinforcing fibers. The review …
The Effects Of Waste Marble Powder On Sustainable Concrete, Jeremy S. Tennesen
The Effects Of Waste Marble Powder On Sustainable Concrete, Jeremy S. Tennesen
Construction Management
Sustainability has been growing consistently more popular in construction, with projects introducing innovative ideas to build greener every year. One material that has not experienced many innovations since emerging in building use is concrete. The reason behind this could be the chemical process of curing concrete being unique compared to most materials. While concrete can be broken down into some of its original components, water, cement, and admixtures used are not retainable. This makes it difficult to recycle the material, and the aggregates recovered from recycling also experience a loss in strength. With admixtures being involved in most concrete mixes …
Paso Robles Police Department Outdoor Training Facility Improvements - Phase 1, Zachary T. Stellini
Paso Robles Police Department Outdoor Training Facility Improvements - Phase 1, Zachary T. Stellini
Construction Management
This paper outlines the pre-construction and construction of the 24,300 square foot Paso Robles Police Department outdoor training facility improvements. The project focuses 12,000 square feet of the total site with improvements that include earthwork and new concrete flatwork. This project is group project with Gavin Abraham and Nic Petri that is broken up into 3 phases, this paper will primarily focus on the phase 1 which includes grading and excavation. The purpose of this project was to provide the Paso Robles Police Department with a modern, functional facility that allows its officers to be better equipped to protect the …
Possible Use For Recycled Disposable Face Masks In Concrete, Lauren Douglas
Possible Use For Recycled Disposable Face Masks In Concrete, Lauren Douglas
Construction Management
Disposable face masks are one of many single use products that are detrimental to the environment. The construction industry has been introducing new ways to incorporate recycled products into their materials. This paper addresses one possible way to use more environmentally friendly materials in the construction industry. 16 concrete cylinders were prepared using 4x8 forms. The mix was manipulated to test the impact of incorporating varying levels of disposable shredded face masks. Compressive strength and workability were measured in these cylinders. Eight cylinders were prepared for the control batch. Four cylinders were prepared using 10 oz. of shredded face masks …